you are assuming the child cannot work on themselves to gain an attraction to the apposite gender.
Interestingly, as a maamin and being told nothing on the subject in my education, I had assumed this to be the case (having no personal experience). Then I read Rav Ahron Feldman's Eye of the Storm, and in his article on SS attraction, he mentions no such possibility. I remember being shocked.
(He basically says (I hope - I saw this years ago) A. You can manage control because that's what Hashem wants, and it may be tough and you may fail but obviously you are holy for being trusted with such a nisayon from Hashem B. You can do things for Yiddishkeit that someone who isn't locked into a marriage can do, like travel to places without a mikva/schools and do kiruv C. Maybe maybe maybe you can find a precious neshama who is willing to marry you and try to work with you, and over time you may succeed in having children.)